The term behavior modification refers to the systematic analysis and change of human behavior and the principal focus is on overt behavior and its relationships to environmental variables. Behavior modifi cation can be applied in many settings, the nature of which helps to defi ne its subsets. Th us, applied in clinical settings, toward clinical goals, it encompasses the subset behavior therapy. In Behavior Th erapy with Children, Volume 2, Anthony M. Graziano focuses on behavior therapy-specifi cally, the behavioral treatment of children's clinical problems.